Boogie Bass Hack
Boogie Bass talking fish, with a "special" 20-second re-recordable message hacked in. Head, tail, and mouth movements are also re-recordable.
Hacking Bigmouth Billy Bass
The beginning of a project to control Bigmouth Billy Bass from a PC.
HowStuffWorks: Singing Fish
How singing fish like the Big Mouth Billy Bass work. Includes a detailed dissection.